So how exactly do we know which doffs are klink and which are Feddie..

Because with cross border doffs, any doff could go either way...

I really don't want to end up buying Doff's I can't use, especially as this was fixed in today's build without the exchange being updated to filter Doff exhanges based on faction..

I had the same thought myself when I read the latest patch notes, since the exchange did not seem to show faction allegiance for DOffs, unlike how it does for BOffs. Must admit that I haven't had time to check on the exchange since the patch but it sounds like an oversight if they've not changed the exchange.